var NormalImg = new Array();
NormalImg[1] = new Image(); NormalImg[1].src = "img/bt_special_off.gif";
NormalImg[2] = new Image(); NormalImg[2].src = "img/bt_theater_off.gif";
NormalImg[3] = new Image(); NormalImg[3].src = "img/bt_onair_off.gif";
NormalImg[4] = new Image(); NormalImg[4].src = "img/bt_bd_off.gif";
NormalImg[5] = new Image(); NormalImg[5].src = "img/bt_topics_off.gif";
NormalImg[6] = new Image(); NormalImg[6].src = "img/bt_request_off.gif";
NormalImg[7] = new Image(); NormalImg[7].src = "img/bt_od_off.gif";

var OverImg = new Array();
OverImg[1] = new Image(); OverImg[1].src = "img/bt_special_on.gif";
OverImg[2] = new Image(); OverImg[2].src = "img/bt_theater_on.gif";
OverImg[3] = new Image(); OverImg[3].src = "img/bt_onair_on.gif";
OverImg[4] = new Image(); OverImg[4].src = "img/bt_bd_on.gif";
OverImg[5] = new Image(); OverImg[5].src = "img/bt_topics_on.gif";
OverImg[6] = new Image(); OverImg[6].src = "img/bt_request_on.gif";
OverImg[7] = new Image(); OverImg[7].src = "img/bt_od_on.gif";

function rolloverImg(num){
	document.images["bt" + num].src = OverImg[num].src;
}
function resetImg(num){
	document.images["bt" + num].src = NormalImg[num].src;
}